Alkyne reactions

0.0(0)
studied byStudied by 0 people
0.0(0)
full-widthCall Kai
learnLearn
examPractice Test
spaced repetitionSpaced Repetition
heart puzzleMatch
flashcardsFlashcards
GameKnowt Play
Card Sorting

1/11

encourage image

There's no tags or description

Looks like no tags are added yet.

Study Analytics
Name
Mastery
Learn
Test
Matching
Spaced

No study sessions yet.

12 Terms

1
New cards

Elimination : 1) xsNaH2 / 2) H2O

elimination reaction (1 of 2 ways to form alkyne), markovnikov and anti markovnikov

<p>elimination reaction (1 of 2 ways to form alkyne), markovnikov and anti markovnikov</p>
2
New cards

hydrohalogenation: xs HX (two equivalents)

added to most substituted carbon

<p>added to most substituted carbon</p>
3
New cards

hydrohalogenation: Hx (one equivalent)

  1. attacked by the π bond of the alkene to give a carbocation on the most substituted carbon, giving “Markovnikov” regioselectivity (See Post: Markovnikov’s Rule) followed by

  2. attack of halide ion on the carbocation.

<ol><li><p>attacked by the π bond of the alkene to give a carbocation on the most substituted carbon, giving “Markovnikov” regioselectivity (<em>See Post: Markovnikov’s Rule</em>) followed by</p></li><li><p>attack of halide ion on the carbocation.</p></li></ol><p></p>
4
New cards

acid catalyzed hydration: HgSO4, H2SO4, H2O

forms enol and ketone, equillibrium favors ketone

OH forms on more substituted carbon (Mark.)

<p>forms enol and ketone, equillibrium favors ketone</p><p>OH forms on more substituted carbon (Mark.)</p>
5
New cards

hydroboration oxidation: 1) R2BH / 2) H2O2, NaOH, H2O

OH forms on the least substituted carbon (anti Mark.)

<p>OH forms on the least substituted carbon (anti Mark.)</p>
6
New cards

Halogenation: X2 (ex Br2)

bridged intermediate forms trans dihaloalkenes

<p>bridged intermediate forms trans dihaloalkenes</p>
7
New cards

halogenation: xs X2 (two equiv.)

tetrahalogenated alkene is formed

<p>tetrahalogenated alkene is formed</p>
8
New cards

ozonolysis: 1) O3 2) H2O

knowt flashcard image
9
New cards

alkylation: 1) NaNH2 2) RX

(2nd way to form alkyne)

performs an SN2 reaction with a primary or methyl halide, yielding a longer internal alkyne

<p>(2nd way to form alkyne)</p><p><span><span>performs an SN2 reaction with a primary or methyl halide, yielding a longer internal alkyne</span></span></p>
10
New cards

dissolving metal reduction: Na / NH3 (L)

forms trans

<p>forms trans </p>
11
New cards

hydrogenation: H2/ pt

turns into alkane

<p>turns into alkane</p>
12
New cards

hydrogenation with poisoned catalyst

syn addition

<p>syn addition</p>